Blink EV charger displays E14 and may indicate an internal power supply fault.

Safety first: Disconnect power at the breaker and verify zero voltage before opening the unit. Internal capacitors may hold charge; avoid touching power supply components immediately after shutdown.

Steps to troubleshoot:

• Visual inspection: Locate the low-voltage power supply module inside the Blink charger. Look for bulging capacitors, burn marks, or cracked components.
• Check connectors: Ensure the AC input and DC output connectors to the power supply are firmly seated.
• Ventilation: Confirm that vents around the power supply are not blocked by dust or debris. Clean carefully with compressed air if needed.
• Board isolation (advanced): A technician can disconnect downstream loads to determine if the supply itself is bad or being overloaded by a shorted board.

In most cases, the remedy is replacement of the internal power supply module or the entire main control board assembly. This should be performed by an EVSE technician.